been before device cube rounds

Horizon Puzzle Cube

Magic Items Bigby Presents: Glory of the Giants

Horizon’s Edge, but a device somewhere in the demiplane allows a cube to function in reverse while the cube is fitted into it.

A Horizon puzzle cube is an 8-inch magical cube made of gold, iron, crystal, and copper, and it is worth 5,000 gp to a sage or collector. A functioning puzzle cube can be solved with 30 minutes of

Death Tyrant Legacy

Monsters Monster Manual (2014)

the target is a Huge or larger object or creation of magical force, this ray disintegrates a 10-foot cube of it. Death Ray. The targeted creature must succeed on a DC 17 Dexterity saving throw or

cube within 120 feet of the tyrant is filled with spectral eyes and tentacles. To creatures other than the death tyrant, that area is lightly obscured and difficult terrain until initiative count 20 on

Mighty Servant of Leuk-o

Magic Items Tasha’s Cauldron of Everything

conjecture than fact, often referring to otherworldly beings, the mysterious Barrier Peaks in Oerth, and the supposedly related device known as the Machine of Lum the Mad. The best details on the device

’s origins and operation can be found in the Mind of Metal, a tome of artificer’s secrets that connects the device to the traditions of the lost Olman people, and which was written by Lum the

Adult Green Dragon Legacy

Monsters Basic Rules (2014)

initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row: Grasping roots and vines

);{"diceNotation":"1d6","rollType":"damage","rollAction":"Thicket","rollDamageType":"piercing"} piercing damage from thorns.Each 10-foot-cube of thickets has AC 5, 30 hit points, resistance to bludgeoning and

Beholder Legacy

Monsters Monster Manual (2014)

object or creation of magical force, this ray disintegrates a 10-foot cube of it. Death Ray. The targeted creature must succeed on a DC 16 Dexterity saving throw or take 55 (10d10);{"diceNotation

rounds in a row. Regional Effects A region containing a beholder’s lair is warped by the creature’s unnatural presence, which creates one or more of the following effects: Creatures

Ancient Green Dragon Legacy

Monsters Basic Rules (2014)

initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row: Grasping roots and

);{"diceNotation":"1d6","rollType":"damage","rollAction":"Thickets","rollDamageType":"piercing"} piercing damage from thorns.Each 10-foot-cube of thickets has AC 5, 30 hit points, resistance to bludgeoning

Geryon Legacy

Monsters Mordenkainen’s Tome of Foes

initiative count 20 (losing initiative ties), Geryon can take a lair action to cause one of the following effects; he can't use the same effect two rounds in a row: Geryon causes a blast of cold to burst

from the ground at a point he can see within 120 feet of him. The cold fills a cube, 10 feet on each side, centered on that point. Each creature in that area must succeed on a DC 21 Constitution saving

Ambitious Assassin

Monsters The Book of Many Things

, filling a 10-foot cube within 5 feet of the assassin. Each creature of the assassin’s choice in that area takes 9 (2d8);{"diceNotation":"2d8", "rollType":"damage", "rollAction":"Vanishing Escape

; the villain can’t take the same lair action two rounds in a row: Distraction. A shrill sound fills the lair. Creatures that can hear it must succeed on a DC 15 Constitution saving throw or

Geryon (Summoner Variant) Legacy

Monsters Mordenkainen’s Tome of Foes

initiative ties), Geryon can take a lair action to cause one of the following effects; he can't use the same effect two rounds in a row: Geryon causes a blast of cold to burst from the ground at a point

he can see within 120 feet of him. The cold fills a cube, 10 feet on each side, centered on that point. Each creature in that area must succeed on a DC 21 Constitution saving throw or take 28 (8d6

Arasta

Monsters Mythic Odysseys of Theros

":"recharge","rollAction":"Web of Hair"}. Arasta unleashes her hair in the form of webbing that fills a 30-foot cube next to her. The web is difficult terrain, its area is lightly obscured, and it lasts for 1

5-foot cube of the web is destroyed if it takes at least 20 fire damage from a spell or other magical source on a single turn.Arasta can take 3 legendary actions, choosing from the options below

Geryon

Monsters Mordenkainen Presents: Monsters of the Multiverse

following lair actions; he can’t take the same lair action two rounds in a row: Banish. Geryon casts the banishment spell. Chill Blast. Geryon causes a blast of cold to burst from the ground

at a point he can see within 120 feet of him. The cold fills a cube, 10 feet on each side, centered on that point. Each creature in that area must succeed on a DC 21 Constitution saving throw or take

Geryon (Variant)

Monsters Mordenkainen Presents: Monsters of the Multiverse

one of the following lair actions; he can’t take the same lair action two rounds in a row: Banish. Geryon casts the banishment spell. Chill Blast. Geryon causes a blast of cold to burst from the

ground at a point he can see within 120 feet of him. The cold fills a cube, 10 feet on each side, centered on that point. Each creature in that area must succeed on a DC 21 Constitution saving throw

Claugiyliamatar

Monsters Storm King's Thunder

effect two rounds in a row: Grasping roots and vines erupt in a 20-foot radius centered on a point on the ground that the dragon can see within 120 feet of it. That area becomes difficult terrain, and

contact with the thickets or take 3 (1d6);{"diceNotation":"1d6","rollType":"damage","rollAction":"Thorns","rollDamageType":"piercing"} piercing damage from thorns.Each 10-foot-cube of thickets has AC 5

Horizon's Edge Magic

Compendium - Sources->Dungeons & Dragons->Bigby Presents: Glory of the Giants

creature uses an action to change the puzzle’s configuration. Puzzle cubes don’t function while on Horizon’s Edge, but a device somewhere in the demiplane allows a cube to function in reverse while the

scattered across the Material and Inner Planes, and these cubes are among the few ways to enter Horizon’s Edge. A Horizon puzzle cube is an 8-inch magical cube made of gold, iron, crystal, and copper

Magical Gadgets

Compendium - Sources->Dungeons & Dragons->Baldur's Gate: Descent into Avernus

driver can activate this magical device as a bonus action, causing the vehicle to expel a 30-foot cube of opaque smoke directly in front of it or behind it. The cloud is stationary and lasts for 1

. This device needs 24 hours to recharge before it can be used again. Teleporter The vehicle’s driver can activate this magical device as a bonus action, causing the vehicle to teleport to an

Claugiyliamatar (possessed)

Monsters Divine Contention

(losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row: Grasping roots and vines erupt in a 20

thorns.Each 10-foot-cube of thickets has AC 5, 30 hit points, resistance to bludgeoning and piercing damage, vulnerability to fire damage, and immunity to psychic and thunder damage. Within 1 mile of its

Activating the Engine

Compendium - Sources->Dungeons & Dragons->Out of the Abyss

Activating the Engine A successful DC 15 Intelligence (Arcana) check is needed to activate the device by puzzling out its array of gears and levers. It then takes 12 rounds for the engine to “align

5. Lift

Compendium - Sources->Dungeons & Dragons->Out of the Abyss

5. Lift Attached to the edge of the barracks platform is a winch-and-basket device consisting of a large swinging arm that carries a thin cord of strong spider silk. The cord runs through a series of

passengers or up to 800 pounds of cargo, then lifted back up to the platform in the same way. It takes 4 rounds for the basket to move between the platform and the floor under normal operation.

Ancient Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

initiative ties), the dragon can take one of the following lair actions; the dragon can’t take the same lair action two rounds in a row: Deep Torpor. The dragon casts the slow spell, requiring no

dragon fills a 20-foot cube it can see within 120 feet of itself with toxic spores. Each creature in that area must succeed on a DC 15 Constitution saving throw or take 14 (4d6);{"diceNotation":"4d6

Adult Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

initiative count 20 (losing initiative ties), the dragon can take one of the following lair actions; the dragon can’t take the same lair action two rounds in a row: Deep Torpor. The dragon casts the

. Toxic Spores. The dragon fills a 20-foot cube it can see within 120 feet of itself with toxic spores. Each creature in that area must succeed on a DC 15 Constitution saving throw or take 14 (4d6

16. Papazotl's Shrine

Compendium - Sources->Dungeons & Dragons->Tomb of Annihilation

crocodile that nests to the rear of the shrine. If the characters attack the crocodiles, their mother joins the fray 2 rounds later. 16B. Mosaic Floor Moss clings to the stonework throughout this hall. The

be dispelled with a dispel magic spell. The crawlway, which is 2 feet wide and 3 feet high, leads to area 16D. Puzzle Cube. If a character searches the pedestal, they discover the outline of a stone

17. The Boiling Bubble

Compendium - Sources->Dungeons & Dragons->Tales from the Yawning Portal->a4

rounds. After 30 feet the corridor gives way to an oval-shaped, domed area enclosed by the protective skin. Here lives the guardian of the treasure, a Huge giant crab that has the following changes

), goggles of night, and a stone of good luck (luckstone). Development. A character who grabs Wave while the protective skin is collapsing can save the lives of those nearby by using the trident as a cube

Inside the Temple

Compendium - Sources->Dungeons & Dragons->Waterdeep: Dragon Heist

divination magic around it. If asked about it, Nim tells Valetta that it built this device to find the errant nimblewright and tried to seek it out, only to discover that Nim couldn’t leave the temple grounds

device comes within 500 feet of a nimblewright other than Nim, the umbrella begins to spin, whir, and click. The spinning, whirring, and clicking accelerates as the distance to the target lessens

A Quick Sharn Story

Compendium - Sources->Dungeons & Dragons->Wayfinder's Guide to Eberron

three rounds to flee or attempt to disarm the device. 8 A skycoach crashes through the wall. Is this an attack, or the result of sabotage? The Villain 1d12 Villain 1 A dragonmarked

package. 6 A delirious street preacher has an apocalyptic vision concerning one of the player characters. 7 The PCs discover a bound-elemental explosive device in their quarters. They have

Anarchist Outcry

Compendium - Sources->Dungeons & Dragons->Journeys through the Radiant Citadel

Anarchist Outcry An ear-splitting crash pierces the air. Five figures wearing snarling, crimson masks clamber atop stalls, each raising a cone-like device to their mouth. Along with an irritating

collapse, disrupting trade and imperiling vendors. Each anarchist wears an intimidating mask sculpted to look like an efreeti and carries a device called a boomhailer. These sound-amplifying, clockwork

A Deep Dragon's Lair

Compendium - Sources->Dungeons & Dragons->Fizban's Treasury of Dragons

it’s encountered in its lair. Lair Actions On initiative count 20 (losing initiative ties), the dragon can take one of the following lair actions; the dragon can’t take the same lair action two rounds in

, and walls of the lair become difficult terrain until initiative count 20 on the next round. Toxic Spores. The dragon fills a 20-foot cube it can see within 120 feet of itself with toxic spores. Each

3. False Entrance

Compendium - Sources->Dungeons & Dragons->Tomb of Annihilation

relief carvings of grinning skulls. Four lines engraved at the center of the slab cross one another to form a star, with both ends of each line marking the location of a cube-shaped cavity cut into the

its turns. After 10 rounds, the gas valves close and the stone block rises back into the ceiling. Any puzzle cubes still in their cavities are pushed out, and the trap resets. Any character searching

Mistshore: Autumn

Compendium - Sources->Dungeons & Dragons->Waterdeep: Dragon Heist

Belchy, sank in Deepwater Harbor almost a century ago. Lantanese gnomes working for Jarlaxle have managed to repair the construct. Two rounds after the characters corner Fel’rekt and Krebbyg, Big Belchy

of steam onto the docks in a 30-foot cube, then begins to move away at a swimming speed of 20 feet. Any creature in the cloud of steam must make a DC 14 Dexterity saving throw, taking 22 (4d10) fire

Facing the Dean

Compendium - Sources->Dungeons & Dragons->Strixhaven: A Curriculum of Chaos

her action on any given round, but if characters succeed on making these checks on three different rounds, Tullus clutches her head and screams “No!” She then falls unconscious. Murgaxor’s Orb

. Throughout the battle, Tullus clutches the green orb. The wicked mage Murgaxor controls her through this device, but separating her from the orb doesn’t break Murgaxor’s control. When Tullus is defeated or

Rakdos Carnival

Compendium - Sources->Dungeons & Dragons->Guildmasters' Guide to Ravnica

action, causing one of the following effects; the carnival can’t use the same effect two rounds in a row: Fire erupts from the ground at up to four points of the DM’s choice in the carnival. The fire

, spiked chains, or other implements of agony appear for a moment to menace 1d6 random creatures in a 20-foot cube. Each target must succeed on a DC 15 Dexterity saving throw or take 9 (2d8) force

7. Gray Ghost Garden

Compendium - Sources->Dungeons & Dragons->Out of the Abyss

action to open or close a valve on the tank, releasing a cloud of pungent fertilizer that fills a 30-foot cube. The cloud grows 10 feet per side each round the valve remains open. The cloud has the same

effect as a stinking cloud spell (save DC 12), but the effect ends 1d4 + 1 rounds after the valve is closed or the tank runs out of fertilizer. The tank contains enough fertilizer to spray for 10 rounds

Appendix D: Magic

compendium - Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden

alphabetical order. Abracadabrus Wondrous item, very rare An abracadabrus is an ornate, gemstone-studded wooden chest that weighs 25 pounds while empty. Its interior compartment is a cube measuring 1

fishing line and immersed in enough water to fill at least a 10-foot cube. At the end of each uninterrupted hour of immersion, roll a d6. On a 6, a floppy, 6-inch-long magical fish appears on the end of

Mighty Servant of Leuk-o

Compendium - Sources->Dungeons & Dragons->Tasha’s Cauldron of Everything

device known as the Machine of Lum the Mad. The best details on the device’s origins and operation can be found in the Mind of Metal, a tome of artificer’s secrets that connects the device to the

determines how), it requires two attuned crew members to be inside the servant and spend their actions on 3 consecutive rounds performing the command. Should the crew members begin the process of entering the

26. Terraced Aquarium

Compendium - Sources->Dungeons & Dragons->Tales from the Yawning Portal->a4

device in the wall is triggered that will shatter the glass walls in this area in 1d6 rounds. The safe contains 6,000 sp and one piece of jewelry worth 3,000 gp.

Casino Features

Compendium - Sources->Dungeons & Dragons->Keys from the Golden Vault

disturbance without resorting to violence. If attacked, the guard reacts in kind and shouts for reinforcements. All other guards arrive in 3 rounds. Security Mirrors Throughout the casino are

hit points, and immunity to poison and psychic damage. In addition to functioning as a normal mirror, each security mirror acts as a magical scrying device, allowing guards in the security office

D&D Beyond

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